取向偏差对镍基单晶高温合金钎焊接头组织与力学性能的影响

赵旭,孙元,侯星宇,张洪宇,周亦胄,丁雨田

Effect of Orientation Deviation on Microstructure and Mechanical Properties of Nickel-Based Single Crystal Superalloy Brazing Joints

Xu ZHAO,Yuan SUN,Xingyu HOU,Hongyu ZHANG,Yizhou ZHOU,Yutian DING

表3 图4中0°+0°取向匹配单晶母材钎焊接头相成分 (atomic fraction / %)

Table 3 Compositions of each phase in filler alloy zone in Fig.4 (atomic fraction / %)

Phase Ni Cr Co W Mo Al Ti Ta Nb Si B M3B2 24.2 13.5 6.3 15.2 4.6 - 0.7 1.3 0.7 - 32.8 CrB 5.9 39.6 4.5 7.8 8.3 - 1.6 1.6 1.8 - 28.9 γ-Ni 60.3 12.1 10.4 3.2 - 7.4 1.4 1.6 2.7 0.9 - γ′ 66.4 4.3 8.3 1.4 0.8 6.7 4.5 1.4 2.0 4.2 - γ+γ′ 61.7 9.8 9.4 1.8 - 9.4 2.8 1.7 0.6 2.8 - M3Si 50.7 1.6 7.2 - - - 0.9 - 14.8 22.5 2.3 γ-Ni+Ni3B+CrB 52.9 8.4 8.8 4.3 1.7 2.1 5.2 - 1.3 2.4 12.9